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发明名称
BOHRERSPITZE UND SYSTEM ZUM BOHREN EINES BOHRLOCHS
摘要
申请公布号
DE602004005444(T2)
申请公布日期
2007.07.19
申请号
DE200460005444T
申请日期
2004.05.19
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
ZIJSLING, DJURRE HANS
分类号
E21B10/32
主分类号
E21B10/32
代理机构
代理人
主权项
地址
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